
<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avator_box">
        <img src="../assets/logo.png" />
      </div>
      <!-- 表单区 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            type="password"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 这是登陆表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 12, message: '长度在 3 到 12 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (valid) {
          try {
            const { data: res } = await this.$http.post('login', this.loginForm)
            if (res.meta.status !== 200) {
              return this.$message.error(res.meta.msg)
            }
            this.$message.success('登陆成功')
            window.sessionStorage.setItem('token', res.data.token)
            window.sessionStorage.setItem('activePath', 'welcome')
            this.$router.push('/home')
          } catch (error) {
            this.$message.error(error)
          }
        }
      })
    }
  }
}
</script>
<style lang="less" scoped>
.login_container {
  height: 100%;
  background-color: lightblue;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: white;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;

  .avator_box {
    height: 130px;
    width: 130px;
    border: wheat 1px solid;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: lightgray;
    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0px 35px 0px 15px;
  box-sizing: border-box;
}
</style>
